difficult

Từ điển American Heritage Dictionary 4th

dif·fi·cult (dĭfʹĭ-kŭlt', -kəlt)adj.
1. Hard to do or accomplish; demanding considerable effort or skill; arduous: “To entertain is far more difficult than to enlighten” (Anthony Burgess). See Synonyms at hard.
2. Hard to endure; trying:
fell upon difficult times.
3. Hard to comprehend or solve:
a difficult puzzle.
4. Hard to please, satisfy, or manage:
a difficult child.
5. Hard to persuade or convince; stubborn. [Middle English, back-formation from difficulte, difficulty. See difficulty.] difʹfi·cult'ly adv.

• Từ đồng nghĩa / Synonyms:
  unmanageable, hard
• Từ trái nghĩa / Antonyms:
  manageable, easy